Walmart, the country's largest grocer, landed on the bottom of a Consumer Reports' survey of nearly 30,000 of its readers who were asked which supermarket chain they thought was the best.

Wegman's, a chain located mainly in the Northeast, was rated highest for service, prices and cleanliness, with Publix, a Southeastern chain and Sprout's, a chain in the West, topping each of their regional groups.

Trader Joe’s and
Costco came in just behind Wegman's -- Trader Joe’s with an 87 out of 100 score, and and Costco with 84 out of 100. Wegman's scored an 88.

Sam’s Club, which is owned by Wal-Mart, scored nine points higher then Walmart's score of 67.

Fifty-five chains were ranked.

According to CR, the survey marks "the fourth straight survey (the earlier ones were in
2005, 2008, and 2011) in which Wegmans, Trader Joe's, and Publix have
been at the top."